XML 37 R24.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Fair Value Measurement and Financial Instruments (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Fair Value Disclosures [Abstract] |
Schedule of Carrying Amounts and Fair Values of Financial Instruments | The following tables set forth the carrying amounts and fair values of the Company’s financial instruments as of September 30, 2018 and December 31, 2017 (in thousands):
|  | September 30, 2018 |
|  |  |  |  |  |  |  |  |  | Fair Value Measurement Based on |
|  | Carrying Amount |  |  | Fair Value |  |  | Quoted Prices In Active Markets (Level 1) |  |  | Significant other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds (cash equivalents) |  | $ | 86,605 |  |  | $ | 86,605 |  |  | $ | 86,605 |  |  | $ | - |  |  | $ | - |
|  | December 31, 2017 |
|  |  |  |  |  |  |  |  |  | Fair Value Measurement Based on |
|  | Carrying Amount |  |  | Fair Value |  |  | Quoted Prices In Active Markets (Level 1) |  |  | Significant other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds (cash equivalents) |  | $ | 11,149 |  |  | $ | 11,149 |  |  | $ | 11,149 |  |  | $ | - |  |  | $ | - |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible preferred stock warrant liability |  | $ | 478 |  |  | $ | 478 |  |  | $ | - |  |  | $ | - |  |  | $ | 478 |
Summary of Fair Value Inputs and Assumptions | The fair value of the convertible preferred stock warrant liability was estimated using the Black-Scholes option pricing model and the following inputs and assumptions as of July 2, 2018 and December 31, 2017:
|  | July 2, 2018 |  |  | December 31, 2017 |
|  | Series E |  |  | Series F |  |  | Series E |  |  | Series F |
Estimated fair value of convertible preferred stock |  | $ | 26.41 |  |  | $ | 26.41 |  |  | $ | 9.57 |  |  | $ | 11.01 |
Exercise price |  | $ | 19.55 |  |  | $ | 9.73 |  |  | $ | 19.55 |  |  | $ | 9.73 |
Remaining term (in years) |  | 4.5 |  |  | 2.6 - 6.5 |  |  | 5.0 |  |  | 3.1 - 7.0 |
Risk-free interest rate |  | 2.7% |  |  | 2.6% - 2.8% |  |  | 2.2% |  |  | 2.0% - 2.3% |
Expected volatility |  | 43% |  |  | 43% |  |  | 43% |  |  | 43% - 44% |
Dividend yield |  | 0% |  |  | 0% |  |  | 0% |  |  | 0% |
Summary of Changes in Instruments Measured on Recurring Basis | The following table presents the changes in Level 3 instruments measured on a recurring basis for the nine months ended September 30, 2018 (in thousands):
Balance at December 31, 2017 |  | $ | 478 |
Change in fair value |  |  | 1,396 |
Reclassification to additional paid in capital |  |  | (1,874 | )
Balance at September 30, 2018 |  | $ | - |

X
- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258 + Details
Name: | us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration